<html>
  <head>
    <script>
      function a(){
        var s = document.getElementById("a");
        s.innerHTML = "sssss"
      }
      window.onload = function(){
        a();
      }
      </script>
  </head>
  <body>
    <div id="a"></div>
    <h1>Hello World</h1>
    <h2>css-loader,style-loader,less-loader,url-loader,html-loader</h2>

    <h3>以下2个div是通过css的url加上背景的</h3><br/>
    <div class="bigimgbg"></div>

    <div class="smallimgbg"></div>
    
    <h3>以下2个div是通过img标签的src加上的</h3><br/>
    <img src="img/big.png"/>
    <img src="img/small.png"/>
  </body>
</html>
